Proper use of a catchall address, external MacBook and MacBook Pro batteries, granular controls on the volume slider, GPS in Airplane mode, and making an old trackball with with Sierra are just the way this show begins. Listen in for much, much more… and feel free to send your questions in, too!

It’s great being able to use your iPhone to find out where you are or where a picture came from, but why isn’t the information always right? Jeff Butts explains how Assisted GPS works and why it leads sometimes to less-than-perfect results.